How can we develop web or mobile App for sending SMS or Email offline?

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Hello everybody , How can we develop web or mobile App for sending SMS or Email offline,
i mean when we do not have internet ?

Posted 5-Feb-15 8:15am

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**Zoltán Zörgő** · Answer 1 · 2015-02-05T08:21:00

You won't be able to send emails... no way.
But you can still send SMS with your own device - that can be a simple phonbe connected to the PC or a dedicated device. Check here: Send and Read SMS through a GSM Modem using AT Commands[^]

[Update]
Some providers might have specific interfaces you could use to send email via WAP Push[^], and there are email AT command[^] also available on some chipsets.